this derivation will be built:
  /nix/store/6gka2kjpwkvp9b853c4na7z8kg8zis3g-treefmt-check.drv
building '/nix/store/6gka2kjpwkvp9b853c4na7z8kg8zis3g-treefmt-check.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=22&system=aarch64-darwin'
building '/nix/store/6gka2kjpwkvp9b853c4na7z8kg8zis3g-treefmt-check.drv' on farm.numtide.com:50051
treefmt-check> mac02: building 6gka2kjpwkvp9b853c4na7z8kg8zis3g-treefmt-check.drv
treefmt-check> traversed 538 files
treefmt-check> emitted 366 files for processing
treefmt-check> formatted 366 files (0 changed) in 1.973s

upload niks3: ok